Klebsiella pneumoniae | Streptococcus | Streptococcus mutans | Streptococcus suis | Streptococcus mitis |
In some studies, the bacteria found in patients with HCAP were more similar to HAP than to CAP; compared to CAP, they could have higher rates of Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa, and less Streptococcus pneumoniae and Haemophilus influenzae.
The most common organisms which cause lobar pneumonia are Streptococcus pneumoniae, also called pneumococcus, Haemophilus influenzae and Moraxella catarrhalis.
NIAID also was instrumental in the development and licensure of acellular pertussis vaccines, conjugate vaccines for Streptococcus pneumoniae and Haemophilus influenzae type b or Hib, and a preventive therapy for respiratory syncytial virus or RSV (Synagis).
In 1912 Cole and Alphonse Dochez developed a serum against Type 1 pneumococcus and also developed a method for testing whether an infection is caused by this or some other type of the bacterium.